Coupling selection

The selection of the coupling size and type will be dependant on several factors.The first requirement must obviously be to choose a unit of adequate size of transmit the maximum torque and for this purpose it is advisable to use the actual available power of the driving machine, unless this latter is known not be exceeded.

Having determined the maximum HP or KW to be transmitted, this is divided by the speed to give the HP or KW / rpm: the result can be multipied with F1 – F2 – F3 service factors; by comparison with the tecnical data, a selection can be made from any of the various coupling types; if the resulting specific rating falls between two coupling size, the larger should be selected.

A final check should be made to ensure that the maximum hub bore dimension is adeguate for the shaft. Providing, after the selection is made, other factors such as weight, torsional stiffness etc., as given in the appropriate tables are acceptable then a standard unit can be selected. if not consult our tecnical department who are always willing to give advice and produce special designs.